Substitute for tin oxid used for enameling metal ware.



UNITED STATES f; PATENT orr on.

BUDOLPH wn nmn, or vammorazuw, wisconsm.

SUBSTITUTE r'on rm 0x11) usnn non nnmnme METAL wean.

No Drawing.

To all whom it may concern: 7

Be it known that I, RUDOLPH WEIMER, residing in Sheboygan, in the county of Sheboygan and State of Wisconsin, have invented new and useful Improvements in Substitutes for Tin Oxid Used for Enameling Metal Ware, of which the following is a description.

This invention relates to improvements in the art of enameling metal ware, and has for its object to provide an inexpensive substitute for tin oxid, or like ingredient, which is one of the most expensive chemicals used in the composition of matter used in White enameling processes.

In making a composition of matter to be used in enameling metal ware white, either tin oxid, cryolite or phosphate of calcium are used as one of the ingredients of the compositiouy Tin oxid producesthe best white surface and has the proper luster and covering quality. Cryolite produces a good quality of enamelvv and phosphate of calcium a rather inferior quality, gray in color. The

first two ingredients are comparatively very I expensive and the latter ingredient does not produce a good quality of enamel whereas the substitute I have discovered produces an enamel of very good quality and is comparatively inexpensive in cost. This substitute consists of the following ingredients, combined in substantially the proportions stated, viz:

Antimony oxid r 70 parts. Caustic soda 28 parts. Chile saltpeter 22 parts. Kaolind 10parts. Barytes 10 parts.

The caustic soda, Chile salt-peter, barytes and kaolin are put in boiling water to dissolve and mix together and then antimony oxid is added to the composition and thor- Speciflcation of Letters Patent. Patented Aug. 31, 19.09.

Application filed October 7, 1908. Serial No. 456,585.

oughly mixed to form a combination with the other elements. As soon as the composition is air dry it is then roasted in a hot roasting oven. to eliminate all of the fumes, gas, water, air, etc., and the mass is then ground and is ready for use.

If desired the'subst-itute may be used in 50 oxid,or like ingredients for enameling metal ware, consisting of seventy parts antimony oxid, twenty eight parts caustic soda, twenty-two parts Chile saltpeter, ten parts kaolin, and ten parts barytes. v

3. The herein described'substitute for tin oxid, or like ingredient for enaiiieling'metal ware,-be1ng a composition in the condltion of havlng been bolled, roasted and ground oxid, twenty eight parts caustic soda, twenty-two parts Chile saltpeter, ten parts kaolin, and ten parts barytes.

l. The herein described substitute for tin oxid, or like ingredient for enameling metal '70 and consisting of seventy parts antimony ware, consisting of boiled, roasted and ground antimony oxid, caustic soda, Chile saltpeter, kaolin, and barytes.

In testimony whereof, I affix my signature, in presence of two witnesses.

RUDOLPH WEIMER. Witnesses:

JOHN M. Dn'rLINo, I GEO. H. DETLING. 

